L.T. Ha

ORCID: 0000-0001-9530-9382
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About
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Research Areas
  • Luminescence Properties of Advanced Materials
  • Multiferroics and related materials
  • Glass properties and applications
  • Magnetic and transport properties of perovskites and related materials
  • Ferroelectric and Piezoelectric Materials
  • Pigment Synthesis and Properties
  • Research studies in Vietnam
  • Advanced Condensed Matter Physics
  • Advanced Photocatalysis Techniques
  • Adsorption and biosorption for pollutant removal
  • Gas Sensing Nanomaterials and Sensors
  • Microwave Dielectric Ceramics Synthesis
  • Solid State Laser Technologies
  • ZnO doping and properties
  • bioluminescence and chemiluminescence research
  • Phosphorus and nutrient management
  • Quantum Dots Synthesis And Properties
  • Radiation Detection and Scintillator Technologies
  • Optical Systems and Laser Technology
  • Layered Double Hydroxides Synthesis and Applications
  • Ga2O3 and related materials
  • Advanced Nanomaterials in Catalysis
  • Graphene and Nanomaterials Applications
  • Lanthanide and Transition Metal Complexes
  • Water Quality Monitoring and Analysis

Thai Nguyen University
2018-2025

Trường ĐH Nguyễn Tất Thành
2022-2024

Duy Tan University
2019-2021

Ton Duc Thang University
2019-2020

Institute of Materials Science
2019-2020

Da Nang University of Technology
2019

Ho Chi Minh City University of Industry and Trade
2018

Hanoi University of Science and Technology
2015-2018

Hanoi University
2016

Hanoi University of Mining and Geology
2009

Abstract This study presents the removal of phosphate from aqueous solution using a new silver nanoparticles-loaded tea activated carbon (AgNPs-TAC) material. In order to reduce costs, was produced residue. Batch adsorption experiments were conducted evaluate effects impregnation ratio AgNPs and TAC, pH solution, contact time, initial concentration dose AgNPs-AC on removing solution. Results show that best conditions for occurred at AgNPs/TAC 3% w/w, 3, time lasting 150 min. The maximum...

10.1038/s41598-020-60542-0 article EN cc-by Scientific Reports 2020-02-27

The sonochemical synthesis of a chitosan-ZnO/Fe3O4 nanocomposite yielded highly porous structure and large surface area for enhancing the photocatalytic degradation cationic (rhodamine B, RhB) anionic (methyl orange, MO) dyes in aqueous solution. Chitosan-ZnO/Fe3O4 demonstrated significant enhancement photodegradation efficiency 99.49% MO (C 0 = 5.32 mg L-1, t 150 min) 90.73% RhB 5.03 under visible light due to its narrow bandgap 2.84 eV. performance was investigated by varying pH, dye...

10.1039/d4ra08262a article EN cc-by-nc RSC Advances 2025-01-01

Magnetic modified-corncob biochar with an impregnation ratio of iron at 20% (w/w) was used for removal Cr(<sc>vi</sc>) from aqueous solution.

10.1039/c9nj02661d article EN New Journal of Chemistry 2019-01-01

Chemical adsorption of non-metal atoms may lead to the emergence novel features in two-dimensional (2D) materials. In this work, electronic and magnetic properties graphene-like XC (X = Si Ge) monolayers with adsorbed H, O, F are investigated using spin-polarized first-principles calculations. Deeply negative energies suggest strong chemical on monolayers. Despite non-magnetic nature both host monolayer adatom, SiC is significantly magnetized by H inducing semiconductor nature. Similar...

10.1039/d3ra01372c article EN cc-by-nc RSC Advances 2023-01-01

Natural zeolites have widely been applied in the removal of contaminants from water while Mg/Al layered double hydroxide (LDH) zeolite (Mg/Al LDH-zeolite) composite is a relatively new material with promising features wastewater treatment. This study evaluated performance combined between natural and LDH adsorption ammonium aqueous solutions. The characterization data composite, including BET, SEM, TEM, XRD, EDX, FTIR show superior traits for higher heterogeneity compared to conventional...

10.1016/j.eti.2021.102244 article EN cc-by-nc-nd Environmental Technology & Innovation 2021-12-29

Purpose of the study: The research aims to clarify salary and satisfaction levels Vietnamese preschool high school teachers today. Methodology: Data was collected from 869 administrators working at preschools, primary schools, lower secondary upper inter-level schools in both public private across country through an online survey (questionnaire designed on Google form), combined with interviews 13 administrators. were processed using SPSS software version 28.0 analyze descriptive statistics,...

10.37251/jee.v6i1.1302 article EN Journal Evaluation in Education (JEE) 2025-01-08

The provisional emergency measures are applied by the Court during process of resolving disputes between parties to ensure resolution case or execution judgment. Although 2015 Civil Procedure Code has provided specific and detailed regulations regarding this issue, certain challenges remain in application these measures. This article points out some inadequacies provisions current civil procedural law on offers suggestions for improvement.

10.70236/tckhplvn.225 article EN Tạp chí Khoa học pháp lý Việt Nam. 2025-03-03

The Gd2O3:Eu3+ nanoparticles were synthesized using a multi-step chemical method with urea as reactant to control the ratio of different Eu3+ activation centers: 2, 4, 6, 8, 10, and 12 mol% combined CTAB surfactant improve surface quality. study aimed determine optimal concentration in presence increase biocompatibility achieve best fluorescence. structure, morphology, optical properties, magnetic properties materials analyzed through FSEM, XRD, HRTEM, XPS, UV-vis, fluorescence, fluorescence...

10.1039/d5ra00932d article EN cc-by RSC Advances 2025-01-01

In this study, freshwater snail shells (FSSs) containing CaCO 3 were used as a low-cost biosorbent for removing Cr(VI) from aqueous solutions. The characteristics of FSS and mechanism adsorption onto investigated. was characterized using nitrogen adsorption/desorption isotherm, X-ray diffraction, scanning electron microscopy with energy dispersive spectroscopy, Fourier transform infrared spectroscopy. determined by conducting various batch experiments along fitting experimental data models....

10.1155/2019/3038103 article EN cc-by Journal of Chemistry 2019-09-22

In this study, Fe 3 O 4 nanoparticle-loaded biochar derived from the pomelo peel (FO-PPB) was synthesized and applied as an affordable material for adsorption of Reactive Red 21 (RR21) in aqueous solution. The characteristics FO-PPB were evaluated by scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX), diffraction (XRD), Raman spectra, Fourier transform infrared spectra (FTIR), Brunauer–Emmett–Teller (BET) surface area. process with RR21 through batch experiments...

10.1155/2020/3080612 article EN cc-by Journal of Chemistry 2020-06-13
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